[nsp] Catalyst 4000 native vlan mismatch on non-trunking port

[Konstantin Barinov]

Hi,

CDP-4-NVLANMISMATCH:Native vlan mismatch detected on port 2/2

Lots of these errors appear in log. Port 2/2 is configured as an
access port. On the other side is also Cisco switch. Everything works fine.

I'm confused. Cisco documentation explains native vlan missmatch
errors only on trunking ports.


>From sh conf:

#module 2 : 6-port 1000BaseX Ethernet
set vlan 101  2/2
set trunk 2/2  off dot1q 1-1005,1025-4094


switch>sh port 2/2
* = Configured MAC Address 

Port  Name               Status     Vlan       Level  Duplex Speed Type
----- ------------------ ---------- ---------- ------ ------ ----- ------------
 2/2  PORT_2             connected  101        normal   full  1000 1000BaseSX


switch>sh trunk 2/2
* - indicates vtp domain mismatch
# - indicates dot1q-all-tagged enabled on the port
Port      Mode         Encapsulation  Status        Native vlan
--------  -----------  -------------  ------------  -----------
 2/2      off          dot1q          not-trunking  101

Port      Vlans allowed on trunk
--------  ---------------------------------------------------------------------
 2/2      1-1005,1025-4094

Port      Vlans allowed and active in management domain 
--------  ---------------------------------------------------------------------
 2/2      101

Port      Vlans in spanning tree forwarding state and not pruned
--------  ---------------------------------------------------------------------
 2/2        
 

switch>sh cdp n
* - indicates vlan mismatch.
# - indicates duplex mismatch.
Port     Device-ID                       Port-ID                   Platform
-------- ------------------------------- ------------------------- ------------
 2/2     s7-Tln-TIX                      GigabitEthernet0/3*       cisco WS-C3508G-XL

 
br
--
Konstantin Barinov